So down to it, the problem that is!
I just purchased a used Jandy LT400 from a friend. I have it plumbed and wired...
When I first turned it on, it went through diagnostic, then threw a pressure switch light... so I replaced it.
Tried again...still have the pressure light flashing... so I turned down the thermostat on the pool side...and the light stayed off. As I turned the knob towards the red, there was a small click, and the light came on and started flashing. I repeated this process multiple times...
Could use some help here... Thanks so much in advance!